EP2486326A2 - Installation de dosage, installation de transport à écoulement dense et procédé d'alimentation en matériau pulvérulent en vrac - Google Patents

Installation de dosage, installation de transport à écoulement dense et procédé d'alimentation en matériau pulvérulent en vrac

Info

Publication number
EP2486326A2
EP2486326A2 EP10770996A EP10770996A EP2486326A2 EP 2486326 A2 EP2486326 A2 EP 2486326A2 EP 10770996 A EP10770996 A EP 10770996A EP 10770996 A EP10770996 A EP 10770996A EP 2486326 A2 EP2486326 A2 EP 2486326A2
Authority
EP
European Patent Office
Prior art keywords
dosing
pressure
metering
pis2
dust
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP10770996A
Other languages
German (de)
English (en)
Inventor
Horst Kretschmer
Jörg KLEEBERG
Dietmar Rüger
Olaf Schulze
Christian Eichhorn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Linde GmbH
Original Assignee
Linde GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Linde GmbH filed Critical Linde GmbH
Publication of EP2486326A2 publication Critical patent/EP2486326A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/72—Other features
    • C10J3/723—Controlling or regulating the gasification process
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/46—Gasification of granular or pulverulent flues in suspension
    • C10J3/48—Apparatus; Plants
    • C10J3/50—Fuel charging devices
    • C10J3/503—Fuel charging devices for gasifiers with stationary fluidised bed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
    • F23K3/02—Pneumatic feeding arrangements, i.e. by air blast
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/10—Charging directly from hoppers or shoots
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J2200/00—Details of gasification apparatus
    • C10J2200/15—Details of feeding means
    • C10J2200/152—Nozzles or lances for introducing gas, liquids or suspensions
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/001—Injecting additional fuel or reducing agents
    • C21B5/003—Injection of pulverulent coal
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/02—Making special pig-iron, e.g. by applying additives, e.g. oxides of other metals
    • C21B5/023—Injection of the additives into the melting part
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/52—Manufacture of steel in electric furnaces
    • C21C5/527—Charging of the electric furnace
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2203/00—Feeding arrangements
    • F23K2203/006—Fuel distribution and transport systems for pulverulent fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2203/00—Feeding arrangements
    • F23K2203/10—Supply line fittings
    • F23K2203/103—Storage devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2203/00—Feeding arrangements
    • F23K2203/10—Supply line fittings
    • F23K2203/104—Metering devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2203/00—Feeding arrangements
    • F23K2203/10—Supply line fittings
    • F23K2203/105—Flow splitting devices to feed a plurality of burners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2203/00—Feeding arrangements
    • F23K2203/20—Feeding/conveying devices
    • F23K2203/201—Feeding/conveying devices using pneumatic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0001—Heating elements or systems
    • F27D99/0033—Heating elements or systems using burners
    • F27D2099/0051—Burning waste as a fuel
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Definitions

  • the present invention relates to a metering system and a dense phase conveying system for the continuous, continuous, metered supply of a dust-like bulk material of light, polydisperse particles to a downstream consumer. Furthermore, the invention relates to a method for the continuous, metered feeding of the powdery bulk material using the dense phase conveying system comprising the metering system according to the invention.
  • pneumatic thin and dense phase conveying systems are applied for the supply of fuel dust in entrained flow gasification reactors or other consumer or reactor systems such as blast furnaces, cupolas etc.
  • pneumatic thin and dense phase conveying systems are applied.
  • a system configuration consisting of bunkers, locks, dosing tanks and, in most cases, several parallel conveying pipes, which lead from the dosing tank to several dust burners, has become established.
  • the mass flow control takes place by means of the differential pressure between the dosing and the consumer.
  • the total mass flow is determined by means of a weighing system on the dosing tank, the mass flows in the individual delivery pipes are determined from individual measurements of the flow density and the flow velocity. Deviations of individual delivery pipes from the proportionate total mass flow are corrected by auxiliary gas addition into the delivery pipe.
  • Such Brennstaubzuditesysteme which are suitable for bulk goods with bulk densities above 450 kg / m 3 , are for example in DE 28 31 208, DE 32 11 045, DD 268 835, DE 10 2005 047 583, DD 139 271 and K. Schomme o A. in "New hut” Leipzig, December 1983, p 441-442 described.
  • renewable fuels such as wood, straw and other biomass
  • thermal pretreatment spontaneous drying, degassing, fission
  • hydrothermal carbonization of biomass and acquire a porous structure. Both effects result in the dusts of these fuels having bulk density values of 150 to 400 (450) kg / m 3 and voids volumes of up to 94% of the bulk volume.
  • the bulk density decreases compared to the true density (bulk density of 200 to 800 kg / m 3 , true density of 800 to 2,500 kg / m 3 ).
  • a dense phase conveying system which solves the task of continuous continuous metered supply of light dust from a supply device from which the bulk material originates, to the consumer, is provided by the sealing power delivery system having the features of claim 9.
  • a first embodiment of a metering system according to the invention which is suitable for the continuous, continuous, metered supply of a dusty bulk material from light, polydisperse particles from a supply device into a plurality of delivery pipes to a downstream consumer, refers to the fact that this metering system comprises two or more metering containers, each equipped with a discharge device.
  • Each of the discharge devices has a dust flow control device associated therewith for each of the delivery pipes, so that in each case one dust flow control device of each discharge device discharges into one of the delivery pipes.
  • a mass flow measuring probe arranged in each conveyor pipe is coupled to the respective dust flow control device of the discharge devices, which opens into the corresponding conveyor pipe.
  • the dosing system is equipped with a pressure regulating device, which is coupled to pressure measuring devices, which are located in the area of the discharge devices of the dosing containers.
  • the Dosier disposerdruck the respective metering is controlled by the pressure control device, wherein a first control parameter is the respective Dosier interchangeer colll-.
  • the pressure control device is coupled to a corresponding measuring device for Dosier disposer spallstand.
  • a forced flow from the supply device is generated to the dosing by level depending a pumping device such as a fan or a fan is connected to the dosing to be filled and generates pressure in the dosing , which is lower than a pressure in the supply device.
  • the main control variables for the metering vessel pressure are the total mass flow to the consumer and the consumer pressure prevailing there.
  • the pressure difference between the promotional dosing and the consumer determines the height of the total mass flow through the Conveying pipes.
  • the dosing tank pressure which is therefore primarily to be regulated results from the sum of the consumer pressure and the differential pressure, which determines the total mass flow.
  • the pressure control device is coupled to the mass flow measuring probes, a measuring device for the total mass flow, such as a weighing of the dosing, and a pressure measuring device of the consumer, the Dosier simplyer horr to promote the bulk material in the delivery pipes is about supply or discharge of gas in the Metering controlled by the pressure control device by a plurality of control and shut-off valves in a string gas line, a flash gas line and a fluidizing gas line is controlled by the pressure control device. Pressure fluctuations due to the variable filling level of the metering container are eliminated by arranging the pressure measuring device for the metering vessel pressure below the dust collector in the discharge device.
  • each case two dosing of the dosing be connected to each other via a pressure equalization line, which can be opened or closed by closing devices.
  • the closing devices can be operated by metering tank pressure and dosing tank level control.
  • the closing devices in the pressure equalization line, the dust flow control devices with associated closure device of the first metering container and the dust flow control devices with associated closure devices of the second metering container are operatively coupled to each other via a control device, so that the mass flow in each of the conveying tubes in dependence Dosier notioner spalltex the two connected dosing can be kept constant.
  • This control device can simultaneously actuate the closing devices and the dust flow control devices of the two connected dosing containers, wherein after the dosing tank pressure or dosing tank controlled operation of the closing devices, the dust flow control devices of the two coupled dosing containers are actuated.
  • These dust flow control devices are controlled such that the mass flows remain constant in the delivery pipes. This is done by a coordinated actuation of the dust flow control devices of the first metering container with the dust flow control devices of the second metering container, in particular by the coordinated actuation respectively of those dust flow control devices of the first and second metering container, which open into the same delivery line.
  • the discharge devices each comprise a fluidized bed and a stirring device arranged above the fluidized bed.
  • the fluidizing gas lines each open below the fluidized bed into the corresponding discharge device.
  • the discharge devices comprise, in addition to the dust flow control devices, closure devices each associated with a dust flow control device.
  • the dust flow control devices with measuring devices for the respective Dosier umanerdralllines, with the respective Dosier employer horrumbleinrich- tions and each with a measuring device for determining the total mass flow, such as a weighing system coupled.
  • a preferred dust flow control device may have a smooth and wear-resistant flow channel with an adjustable flap, which can be actuated by a fine actuator, so that the flow channel cross-section decreases steadily downstream in the direction of the conveyor tubes.
  • Pressure regulation can be arranged horizontally above the fluidized bed so that an introduction of the gas string or the compensation gas can take place in a diffused manner.
  • Dusts which can be metered in with the metering system according to the invention are light, polydisperse particles with a viscosity Volume in a range up to 94%, which have a bulk density of 200 to 800 kg / m 3 (which corresponds to a bulk density of 150 to 200/450 kg / m 3 ).
  • the metering system comprises at least two coupled metering containers; Depending on the required dosing but more than two dosing can be arranged and coupled with each other.
  • the supply device encompassed by a dense phase conveying system can be a bunker, in a further embodiment the supply device can be a central supply system in which the filling of the dosing containers takes place pneumatically or mechanically directly from a central deposit, such as a dryer, sludge or degasser. Even from a bunker, the supply can be pneumatic or mechanical.
  • a bunker comprises a ventilation element for aeration of the bunker bed, and a plurality of bunker discharge elements corresponding to the number of downstream metered bins.
  • the Bunkeraustragsiata are connected via a shut-off valve and a filling line, each with a dosing.
  • Each metering container can also be closed by a closure device relative to the supply device.
  • a suitable shut-off valve which can also be arranged in the filling lines of the central supply system, can be a rotary valve, an angular seat fitting or preferably a rotary valve.
  • the dense phase conveying system has a ventilation device, which can be connected to the metering containers and the metering container level control can be actuated.
  • the ventilation device is designed such that it in the respective metering a negative pressure relative to the Can provide pressure in the supply device.
  • An inventive method relates to the continuous, continuous, metered feeding the dusty bulk material of light, polydisperse particles by the dense stream conveying system according to the invention, comprising a supply device, a dosing system according to the invention and a plurality of delivery pipes, which lead to a downstream consumer.
  • the continuous, continuous, metered feeding is provided by a coupled, coordinated operation of the two or more metering of the metering by the individual metering level-controlled when they are empty, with a negative pressure relative to the supply device for filling with bulk material from the supply device be acted upon and pressurized at a fill level maximum with stringing gas to an operating pressure.
  • the pressure equalization line is opened to a full metering container which is pressurized to operating pressure, and the respective dust flow control devices are closed or opened when the two metering containers are equalized, so that the mass flow in the respective delivery tubes remains constant.
  • this sliding change of the dosing containers is automatically controlled in terms of level, pressure and mass flow, without the dust being interrupted or taking place irregularly.
  • the dense phase conveying system according to the invention with the dosing system thus offers advantageously the elimination of locks and thus a significant source of discontinuities and possible disturbances.
  • the steady flow of dust from the bunker to the dosing and at the discharge to the delivery pipes is caused by forced flow forces, as the
  • FIG. 1 shows a process flow diagram of an embodiment of the dense phase conveying system according to the invention with a bunker as a supply device
  • FIG. 2 shows a process flow diagram of a further embodiment of the dense phase conveying system according to the invention with a central bulk material supply system
  • FIG. 3 is a schematic detail of the bunker of Fig. 1,
  • the device of the invention relates to a method and apparatus for the continuous, metered supply of dusts easily, polydisperse particles in reactors and shaft furnaces with any operating pressure, especially in entrained flow reactors of the pressure gasification.
  • the light and polydisperse dusts have many forms and a porous structure. Both effects result in the bulk density reaching values of 150-400 (450) kg / m 3 and voids volumes up to 94% of the bulk volume.
  • the continuous, metered supply of light, polydisperse dust to consumer systems of any pressure is possible.
  • the dust is supplied directly from a central deposit (dryer, gravity / degasser) or first to a bunker and then successively to several dosing containers by means of pneumatic or mechanical conveyors.
  • a central deposit dryer, gravity / degasser
  • the dosing are brought by means of a fan / suction filter to a negative pressure relative to the bunker or the central deposit to dissipate the registered carrier gas of the dust stream and settle the dust (compaction) to let.
  • the dust of the bunker is conveyed successively into the metering containers in accordance with the requirements, the delivery being forced by the negative pressure in the respective metering container relative to the bunker and by aeration of the dust in the bunker with vault-shaped ventilation elements, for example with porous sintered metal tubes.
  • the discharge elements on the bunker cause a throttling effect;
  • Bunkeraustrags- elements may be, for example, a Schrägsitzarmatur, a rotary valve or a rotary valve. Without the restriction at the discharge, the aeration / discharge gas would not mix with the dust and break unladen as a pure, barely charged gas jet into the dosing.
  • a discharge device on the dosing container comprising the following components: a fluidized bed for fluidization, a stirrer for bulk material homogenization and gas mixing, several dust flow control units for mass flow control in the individual delivery pipe and for balancing the dust flows of the delivery pipes to each other, a control valve for the fluidizing gas quantity addition to the fluidized bed and a pressure measuring point for the regulation of Dosier simplyerdschreibe during stringing, metered conveying and relaxing.
  • the mass flow measuring probes in the delivery pipes the opening degrees of the dust flow control unit are monitored during the sliding coupling / uncoupling of the metering containers.
  • the dust flow control units and the mass flow measuring probes together form controlled systems.
  • a driving pressure difference forms as a drive of the dust flow over the dust flow control units.
  • the vortex velocity at the fluidized bed is adjusted from 10 to 00% of the gas velocity at the loosening point of the dusts treated here. This low speed should not be exceeded so as not to cause excessive turbulence of the light, small particles.
  • the gas velocity at the loosening point of the dusts treated here is up to 0.01 m / s.
  • the system comprises a bunker B with the bunker delivery elements AE1 / 1 to AE1 / 3 and a dosing system with the dosing containers DB1.DB2, DB3, above the discharge elements AE1 / 1 to AE1 / 3 aeration of the bunker bed by means of the ventilation elements BE1 / 1 to BE 1/3 is carried out and in the dosing container to be filled, for example, the dosing container DB / 1 with open fittings AA3 / 1, KH4 / 1, KH8 / 1, AA11 a vacuum with the serving as a pumping device fan V for generating a bulk flow to the dosing DB / 1 is created.
  • the solid discharged with the exhaust gas from the dosing tank DB / 1 is retained in the filter F1 and returned to the bunker B. If the dosing tank DB / 1 reaches the maximum level LIS + 1, the fittings are closed towards the bunker B and the filter F1, whereupon the dosing tank DB / 1 operating pressure PIS2 / 1 is covered by the shut-off valve AA15 / 1 and the control valve RV16 / 1 in the Beêtsgastechnischtechnisch be opened and so the dosing container DB / 1 is brought to the same pressure as the dosing container located in the delivery state DB / 2.
  • the dosing tank DB / 1 can operate with a balanced pressure until the dosing tank DB / 2 becomes empty and the dosing tank DB / 2 becomes empty. 1 then takes over the metering supply to the reactor.
  • the mass flow control is performed on the variable differential pressure PDC between the Dosier actuallyerdruck PI1 of the first dosing tank DB / 1 and the reactor pressure PIR, wherein the mass flow increase the supply of compensation gas BG and the mass flow reduction, the removal of flash gas EG from the dosing DB through the pressure filter F2 is increased.
  • Securing the continuous, metered feeding of the dust to the reactor is provided by using the dosing system according to the invention with at least two dosing DB, but it can also be provided a larger number depending on the reactor power.
  • the light dust is aerated, homogenized and metered in the discharge elements AE2 / 1-3 of the metering tanks DB / 1-3 before entering the delivery pipes FR / 1-3.
  • the at least two dosing containers DB / 1, DB / 2 switch accordingly Depending on whether the maximum, minimum or empty level LISI, LIS2 have been reached, the process alternates between the operating modes. While dosing tank DB / 1 delivers dosed, the empty dosing tank DB / 2 is depressurised and brought to negative pressure, filled with bulk material and returned to operating pressure.
  • the sliding coupling of the dosing DB / 2 is carried to the dosing DB / 1 by opening the ball valves KH14 / 1, KH14 / 2 and the coupled dust flow control devices FI2 / 2 to FI3 / 2 of common funding sources FR1, FR2, FR3.
  • the sliding uncoupling of the dosing container DB / 1 from the dosing container DB / 2 takes place by closing the ball valves KH14 / 1, KH14 / 2 and the dust flow control devices FI2 / 2 to FI3 / 2 of the common delivery pipes FR1, FR2, FR3, whereupon the dosing container DB / 2 the metered conveying takes over.
  • the now empty dosing DB / 1 now take the steps of relaxation, the vacuum generation, filling and re-stringing, which is then ready for use again on call.
  • the dosing containers DB / 1-3 can also be filled pneumatically or mechanically in succession directly, as shown in FIG. 2, without bunkers from a central supply system. Again, the carrier gas of the filling is sucked from the dosing containers DB / 1-3 from the fan filter F1. Otherwise corresponds to the plant in Fig. 2 of the equipped with the bunker in Fig.1.
  • the continuity of the dust flows to the reactor is ensured here by the sliding coupling and uncoupling of the dosing DB / 1-3, by balancing the operating pressure by opening the between the two to be coupled dosing DB / 1, DB / 2 Pressure equalization line is brought about and a closing speed and a closing amount of the dust flow control devices FI1 / 1-3 / 1 of the decoupling dosing DB / 1 is always equal to an opening speed and an opening amount of the dust flow control devices FI1 / 2-3 / 2 of the coupling dosing tank DB / 2 and thereby the dust flow in each delivery tube remains constant, which is determined by the mass flow measuring system FIC1-3, which additionally the opening degree Dust flow control devices FI1 / 1-3 / 2 are influenced, monitored and controlled.
  • the flash gas which is discharged at too high operating pressures from the dosing DB, are collected and recompressed, and used again as working gas BG, SpG, BAG1, if three or more dosing DB / 1, DB / 2 , DB / 3 are installed.
  • a weighing system W1-W3 can be used to monitor the level of each dosing and measuring the total mass flow, which makes up the sum of the individual mass flows in the delivery pipes. Additionally, if desired or required, a different but defined mass flow can be set in each delivery pipe FR1, FR2, FR3 at the same time by means of the dust flow control devices FI1 / 1-3 at the same time by adjusting the degree of opening of the dust flow control devices FI1 / 1 -3/2, while the differential pressure PDC between dosing tank DB and reactor R is kept stable and constant.
  • a suitable dust flow control device is for example FLUSOMET ® regulating unit and has an adjustable flap with fine actuator, with the free flow passage downstream steadily reduced, is smooth and wear-resistant and provides settings available to the solids stream no wedging and swirling.
  • the supply of clothing and compensation gas to the dosing DB can be supplied horizontally, possibly above the bed, so that it is diffused and that no more intense turbulence than 0.01 m / s and no beam formation in the bed into about 0 , 5 m / s is generated. is produced.
  • an entrained flow gasification reactor R with a pulverized fuel output of approximately 400 MW can be charged via three identical delivery pipes FR1, FR2, FR3 with a total of 50 t / h biocoks.
  • FR1, FR2, FR3 with a total of 50 t / h biocoks.
  • the operating pressure Pl-R in the reactor is for example 25 bar and should always be constant, ie Pl-R is the reference pressure of the system.
  • the gross volume of the three dosing DB / 1, DB / 2, DB / 3 is 80 m 3 each and the gross volume of the bunker B shown in Fig. 1 is 1200 m 3 .
  • the supply of dosing DB / 1, DB / 2, DB / 3 takes place without bunker directly from the central supply system SG.
  • the delivery pipes FR1, FR2, FR3 have a nominal diameter of DN 80 mm.
  • the Biokoks with a particle size smaller than 500 pm, mainly even smaller than 250 ⁇ , is promoted in the dense stream at speeds of at most 8 m / s.
  • the Biokoks is produced thermally mechanically from renewable resources and transported in Fig. 1 by means of pneumatic conveying to the bunker B and distributed almost uniformly over several entry points SG in the bunker B. While dust settles in bunker B, the inert conveying gas is sucked out by fan V and released from dust particles in filter F1.
  • the three dosing DB / 1, DB / 2, DB / 3 are placed directly under the bunker and connected to falling, lockable filling lines.
  • the three dosing tanks DB / 1, DB / 2, DB / 3 are filled one after the other.
  • a dosing tank, eg DB / 1, is connected to the reactor R and feeds the biokoks via the three delivery pipes FR1, FR2, FR3 into the reactor R.
  • the second metering container, eg DB / 2 is filled and covered to 25 bar on demand for coupling to the reactor R ready, if in the dosing container DB / 1 through the level measurement LISI or the balance W1 the minimum level is measured and signaled.
  • the third dosing tank DB / 3 is empty, decoupled from the reactor R, expanded and can be filled and covered to 25 bar.
  • the weighing system W directs the pressure equalization between the dosing container DB1 becoming empty filled dosing tank DB2 by opening the ball valves KH14 / 1.2.
  • the discharge unit AE2 / 2 in the filled dosing container DB2 (a corresponding discharge unit AE is shown in detail in FIG. 4 with acceleration and discharge gas supply RV, with the fluidized bed WB, the stirrer RW, the dust flow control units F1 and the ball valves KH; the supply lines for acceleration and discharge gas BAG2 are shown in FIGS.
  • the flow rates in the delivery lines FR1, FR2, FR3 are monitored with mass flow probes FIC1, FIC2 and FIC3.
  • the delivery flows are corrected by automatically adjusting the opening degree of the respective dust flow control units FI1, FI2 or FI3 of the corresponding metering metering container. If required, this control can also be used to set different flow rates in the three delivery lines. However, the three outlets in each of the three delivery lines always feed the three outlets of each dosing container in operation.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Air Transport Of Granular Materials (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Control Of Conveyors (AREA)

Abstract

L'invention concerne une installation de dosage destinée à l'alimentation dosée, régulière et continue, d'un consommateur disposé en aval en matériau pulvérulent en vrac, composé de particules légères polydispersées, d'un dispositif d'alimentation (B,SG) vers une pluralité de tuyaux de transport (FR1,FR2,FR3). Selon l'invention, l'installation de dosage comporte au moins deux récipients de dosage (DB1,DB2,DB3) doté chacun d'un dispositif de déversement (AE2/1,AE2/2,AE2/3) qui, pour chaque tuyau de transport (FR1,FR2,FR3), comprend un dispositif de régulation d'écoulement pulvérulent (FI1/1,FI2/1,FI3/2) débouchant dans le tuyau auquel il est associé, une sonde de mesure de débit massique (FIC1,FIC2,FIC3) étant disposée sur chaque tuyau de transport (FR1,FR2,FR3) couplé au dispositif de régulation d'écoulement pulvérulent (FI1/1 à FI3/2) qui débouche dans le tuyau de transport (FR1,FR2,FR3) correspondant. L'installation de dosage comporte en outre un dispositif de régulation de pression qui est couplé à des dispositifs de mesure de pression (PI1/1,PI1/2,Pl1/3) montés sur les dispositifs de déversement (AE2/1,AE2/2,AE2/3) et qui commande une pression des récipients de dosage (PIS2/1,PIS2/2,PIS2/3) au moins en fonction d'un niveau de remplissage des récipients de dosage (LIS1,LIS2,LIS3). Un dispositif de pompage (V) pouvant être couplé à chaque récipient de dosage (DB1,DB2,DB3) fournit une pression (PIS2/1,PIS2/2,PIS2/3) au récipient de dosage (DB1,DB2,DB3) qui est inférieure à une pression régnant dans le dispositif d'alimentation (B,SG). L'invention porte également sur une installation de transport à écoulement dense équipée de cette installation de dosage, et sur un procédé d'alimentation dosée, régulière et continue, en matériau pulvérulent en vrac, composé de particules légères polydispersées.
EP10770996A 2009-10-10 2010-10-08 Installation de dosage, installation de transport à écoulement dense et procédé d'alimentation en matériau pulvérulent en vrac Withdrawn EP2486326A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009048931.2A DE102009048931B4 (de) 2009-10-10 2009-10-10 Dosieranlage, Dichtstromförderanlage und Verfahren zum Zuführen von staubförmigem Schüttgut
PCT/EP2010/006149 WO2011042193A2 (fr) 2009-10-10 2010-10-08 Installation de dosage, installation de transport à écoulement dense et procédé d'alimentation en matériau pulvérulent en vrac

Publications (1)

Publication Number Publication Date
EP2486326A2 true EP2486326A2 (fr) 2012-08-15

Family

ID=43734622

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10770996A Withdrawn EP2486326A2 (fr) 2009-10-10 2010-10-08 Installation de dosage, installation de transport à écoulement dense et procédé d'alimentation en matériau pulvérulent en vrac

Country Status (11)

Country Link
US (1) US20120257934A1 (fr)
EP (1) EP2486326A2 (fr)
CN (1) CN102648377A (fr)
AU (1) AU2010305043A1 (fr)
BR (1) BR112012008452A2 (fr)
CA (1) CA2776633A1 (fr)
CL (1) CL2012000910A1 (fr)
DE (1) DE102009048931B4 (fr)
IN (1) IN2012DN03394A (fr)
RU (1) RU2012117504A (fr)
WO (1) WO2011042193A2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012104866B4 (de) * 2012-06-05 2014-10-30 L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Verfahren zum Betrieb einer Schüttgutschleuseneinrichtung
DE102012217890B4 (de) * 2012-10-01 2015-02-12 Siemens Aktiengesellschaft Kombination von Druckaufladung und Dosierung für eine kontinuierliche Zuführung von Brennstaub in einen Flugstromvergasungsreaktor bei langen Förderstrecken
US10494200B2 (en) * 2016-04-25 2019-12-03 Chevron Phillips Chemical Company Lp Measurement of product pellets flow rate
CN115352662B (zh) * 2022-10-19 2023-01-17 江苏永道科技有限公司 一种基于智能计量的粉粒体物料包装系统

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2556957A1 (de) * 1975-12-18 1977-06-30 Otto & Co Gmbh Dr C Anlage zur vergasung feinkoerniger brennstoffe
DD147188A3 (de) 1977-09-19 1981-03-25 Lutz Barchmann Verfahren und vorrichtung zur druckvergasung staubfoermiger brennstoffe
DD139271A1 (de) 1978-09-28 1979-12-19 Manfred Schingnitz Verfahren und vorrichtung zur zufuehrung staubfoermiger materialien
DD206309A3 (de) 1981-07-17 1984-01-18 Kretschmer Horst Verfahren zur regelung von massenstroemen
DD268835C2 (de) 1983-08-24 1990-10-24 Rolf Guether Verfahren und vorrichtung zur zufuehrung staubfoermiger materialien
FR2664506B1 (fr) * 1990-07-13 1993-05-07 Bp Chemicals Snc Procede et dispositif d'introduction d'une poudre dans un reacteur.
DE4105227A1 (de) * 1991-02-20 1992-08-27 Krupp Koppers Gmbh Verfahren und vorrichtung zur vergasung eines feinkoernigen bis staubfoermigen brennstoffes mit flugascherueckfuehrung
CN100526436C (zh) * 2005-06-28 2009-08-12 庞玉学 一种粉煤气化工艺中安全密封和气流输送的方法
DE102005047583C5 (de) 2005-10-04 2016-07-07 Siemens Aktiengesellschaft Verfahren und Vorrichtung zur geregelten Zufuhr von Brennstaub in einen Flugstromvergaser
DE102005048488C5 (de) * 2005-10-07 2020-07-02 Siemens Aktiengesellschaft Verfahren und Vorrichtung für Flugstromvergaser hoher Leistung
DE102007020332A1 (de) * 2007-04-30 2008-11-06 Siemens Ag Einsatz einer Mischung von Kohlendoxid und Stickstoff als Inertisierungs- und Fördermedium in Staubeintragsystemen für die Kohlenstaubdruckvergasung
DE102007020333A1 (de) * 2007-04-30 2008-11-06 Siemens Ag Einsatz von reinem Kohlendioxid als Inertisierungs- und Fördermedium in Staubeintragsystemen für die Kohlenstaubdruckvergasung
DE102008012733A1 (de) * 2008-03-05 2009-09-10 Uhde Gmbh Nachfördersystem in einen Kohlevergasungsreaktor
TWI461522B (zh) * 2008-03-05 2014-11-21 Thyssenkrupp Uhde Gmbh 用於煤的氣化反應器之連續燃料供應系統
DE202008016646U1 (de) * 2008-07-29 2009-07-02 Siemens Aktiengesellschaft Mehrstufiges Staubdosiersystem für hohe Drücke mittels Schleusen
DE102008036058B4 (de) * 2008-08-01 2013-04-18 Linde Ag Verfahren und Vorrichtung zum Anfahren von mit Brennstaub betriebenen Vergasungsreaktoren

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011042193A2 *

Also Published As

Publication number Publication date
AU2010305043A1 (en) 2012-05-10
WO2011042193A3 (fr) 2011-07-14
BR112012008452A2 (pt) 2019-09-24
CL2012000910A1 (es) 2012-08-17
DE102009048931B4 (de) 2014-06-18
CN102648377A (zh) 2012-08-22
DE102009048931A1 (de) 2011-04-14
RU2012117504A (ru) 2013-11-20
IN2012DN03394A (fr) 2015-10-23
CA2776633A1 (fr) 2011-04-14
WO2011042193A2 (fr) 2011-04-14
US20120257934A1 (en) 2012-10-11

Similar Documents

Publication Publication Date Title
DE102009048961B4 (de) Dosiervorrichtung, Dichtstromförderanlage und Verfahren zum Zuführen von staubförmigen Schüttgut
DE102005047583B4 (de) Verfahren und Vorrichtung zur geregelten Zufuhr von Brennstaub in einen Flugstromvergaser
EP2249953A2 (fr) Système de réacheminement dans un réacteur de gazéification du charbon
DE102005003620A1 (de) Verfahren und Vorrichtung zur pneumatischen Förderung von schwerfließendem Schüttgut
DE102006039622A1 (de) Eintragssystem
DE102009048931B4 (de) Dosieranlage, Dichtstromförderanlage und Verfahren zum Zuführen von staubförmigem Schüttgut
DE102008052673A1 (de) Nachfördersystem in einen Kohlevergasungsreaktor
DE4225483C2 (de) Schüttgutdrosselvorrichtung zum Entspannen, Ausschleusen, Dosieren, Dispergieren und Fördern feinkörniger Schüttgüter
DE102012217890B4 (de) Kombination von Druckaufladung und Dosierung für eine kontinuierliche Zuführung von Brennstaub in einen Flugstromvergasungsreaktor bei langen Förderstrecken
EP0471234B1 (fr) Dispositif pour le dosage de matériaux en vrac
WO2002022476A1 (fr) Dispositif pour l'introduction de matieres en vrac a ecoulement difficile dans une conduite d'acheminement
DE3109111A1 (de) "anlage zum eingeben von kohle in metallurgische prozessgefaesse mit einer vielzahl von einblasstellen und verfahren zum betreiben der anlage"
WO2012175464A1 (fr) Injection homogénéisée de poussières à point d'étranglement fixe dans la conduite de transport des poussières
DE102015121619B4 (de) Fluidisierungsboden mit einem Rührwerk in einem Druckbehälter für Schüttgut und Verfahren zur Fluidisierung von Schüttgut in einem Druckbehälter
EP1628897A1 (fr) Dispositif d'alimentation continue d'une conduite d'alimentation pneumatique, en solide pulverulent
DE3050394A1 (en) Method of feeding powder-like fuel mixture to blast furnace tuyeres
EP1105544B1 (fr) Procede de production de zinc selon le procede imperial smelting dans une installation a four vertical pour imperial smelting
DE102008012733A1 (de) Nachfördersystem in einen Kohlevergasungsreaktor
DE3418455A1 (de) Verfahren und einrichtung zum einblasen feinkoerniger feststoffe in eine metallschmelze
CN211164680U (zh) 一种用于制备ecp板所需泥料的泥料制备系统
DE3331414A1 (de) Verfahren zur einbringung koerniger und/oder staubfoermiger gueter in pneumatische foerderanlagen und foerdervorrichtung zur durchfuehrung dieses verfahrens
WO2012175463A1 (fr) Injection homogénéisée de poussières à point d'étranglement pouvant être commandé dans la conduite de transport des poussières
DE2612346A1 (de) Vorrichtung zum kombinierten zerkleinern, sichten und trocknen koerniger materialien
EP0922773A1 (fr) Procédé et dispositif pour le transport pneumatique de matériau en vrac dans un four de fusion métallique
DE3643118A1 (de) Verfahren und anlage zur aufbereitung von brennstoff fuer wirbelbettverbrennungsanlagen

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20120510

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

RAX Requested extension states of the european patent have changed

Extension state: ME

Payment date: 20120510

Extension state: BA

Payment date: 20120510

17Q First examination report despatched

Effective date: 20140708

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20141119